Our beautiful daughter Claire Davis, has severe head trauma, as the result of a gunshot. She needs your continued prayers. We would like to thank our family, friends, the community and the equestrian community for their outpouring of love and support, as well as the school for their continued support of the students and teachers.

We would also like to express our gratitude to our first responders and the trauma team at Littleton Adventist Hospital for saving our daughter's life and quickly getting her into surgery. Claire is still in critical condition and your prayers are appreciated.

At this time we ask that you respect our wishes for privacy, for us and the hospital. Thank you for your continued support, love and prayers, the Davis Family.

According to Robinson, it took less than 1 minute and 20 seconds from the time Pierson entered the school and fired the first round to the time he killed himself.

Robinson said Pierson entered the high school just before 12:33 p.m. on Friday with a shotgun, multiple rounds of ammunition, a machete and a backpack with 3 incendiary devices.

He said Pierson legally purchased the shotgun at a retail store on Dec. 6. On the morning of the shooting he legally bought ammunition.

"I choose to never use his name again in public," Robinson said about the shooter.